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What are Ventless Gas Fireplaces?

What are Ventless Gas Fireplaces?

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What are Ventless Gas Fireplaces?

People are buying ventless gas fireplaces now more than any other type of supplemental gas heating product. An estimated 8 million American homes enjoy the comfort and convenience of ventless gas fireplaces.

There is nothing as captivating, charming or as comforting as a fireplace but wood-burning fireplaces are seldom used because of the heat loss. Ventless fireplaces require no chimney or gas lines, so they can be placed almost anywhere in the home and the fuel burns clean with no smoke, pollution or odor.

Some of the best-selling vent free heating products include ventless fireplaces and ventless gas log sets which offer the appearance of a traditional fireplace complete with “burning logs” that are fitted into an existing fireplace.

So How do Ventless Fireplaces Work?

Ventless fireplaces use natural or propane gas and most models do not even need electricity.

Natural or propane gas fuels the flame through a line that is connected to a flame burner inside the heating appliance.

Can vent-free fireplaces be installed anywhere?

Ventless fireplaces can be installed in almost any room of your home. However, as with any new fireplace installation, it is important to check with your local building department to see if a ventless system can be used in your home.

What's the difference between Direct Vent, B-Vent and Ventless?

Direct Vent

A direct vent fireplace uses a coaxial pipe system (a small pipe within a larger pipe) and brings in air from the outside through the outer pipe.

The exhaust vents can be installed through a sidewall or through the roof.


  • The inner pipe vents the exhaust while the outer pipe draws in the outside air
  • Vent pipe required
  • Sealed glass front panel

B-Vent/Natural Vent

The B-Vent must be vented through the sidewall or roof (like a furnace).


  • Decorative, but lower efficiencies
  • Vent pipe required
  • Usually lower cost than Direct Vent systems


A ventless gas fireplace operates without a chimney, flue or vent, so you can install it practically anywhere.


  • Inexpensive and have low operating costs
  • 99% energy efficiency
  • Provide warmth during power outages
  • The heat goes into the room instead of out of a chimney

Ventless Gas Log Sets

Ventless Gas Log Sets are also a great for adding efficient warmth to any cold room and have been enjoyed for years because they are easier to maintain, cleaner than wood fireplaces and are a great source of supplemental heat.

You can have an energy efficient heat source that also looks and feels like a real wood fire! gas fireplace log sets come with attractive features such as a thermostat, remote control, or LED ambient lights that backlight the log set for a warmer glow and large glowing ember beds beneath the logs create an even more realistic appearance.

Shop our large selection of quality ventless gas log sets today!

Duluth Forge Ventless Gas Log

Duluth Forge Ventless Dual Fuel Gas Log Set

This rich, hand-painted, cement gas log set provides excellent details emulating the realism of a wood fire. This log set is designed to reflect a split stack and was developed using real wood molded to create the look of a new fire with bark and split wood elements being the focus.

Enjoy the quality and the efficiency of 30,000 BTU of Vent Free Heating with the Split Red Oak Vent Free Gas Log Set.

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